function handle = createGround(SimLmk,ax,color)

% CREATEGROUND  Create ground graphics.
%   CREATEGROUND(SimLmk, AX, CLR) creates a horizontal 'surface' of given
%   color CLR in the axes AX. The limits are specified in SimLmk.
%
%   GH = CREATEGROUND(...) returns a handle to the 'surface' object.

%   Copyright 2008-2009 Joan Sola @ LAAS-CNRS.

if nargin < 2
    ax = gca;
end

[x,y] = meshgrid(SimLmk.lims.xMin:2:SimLmk.lims.xMax,SimLmk.lims.yMin:2:SimLmk.lims.yMax);
z = zeros(size(x));
handle = surface(...
    'parent',     ax,...
    'XData',      x,...
    'YData',      y,...
    'ZData',      z,...
    'FaceColor',  'none',...
    'EdgeColor',  color,...
    'Marker',     'none');



% ========== End of function - Start GPL license ==========


%   # START GPL LICENSE

%---------------------------------------------------------------------
%
%   This file is part of SLAMTB, a SLAM toolbox for Matlab.
%
%   SLAMTB is free software: you can redistribute it and/or modify
%   it under the terms of the GNU General Public License as published by
%   the Free Software Foundation, either version 3 of the License, or
%   (at your option) any later version.
%
%   SLAMTB is distributed in the hope that it will be useful,
%   but WITHOUT ANY WARRANTY; without even the implied warranty of
%   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
%   GNU General Public License for more details.
%
%   You should have received a copy of the GNU General Public License
%   along with SLAMTB.  If not, see <http://www.gnu.org/licenses/>.
%
%---------------------------------------------------------------------

%   SLAMTB is Copyright:
%   Copyright (c) 2008-2010, Joan Sola @ LAAS-CNRS,
%   Copyright (c) 2010-2013, Joan Sola,
%   Copyright (c) 2014-    , Joan Sola @ IRI-UPC-CSIC,
%   SLAMTB is Copyright 2009 
%   by Joan Sola, Teresa Vidal-Calleja, David Marquez and Jean Marie Codol
%   @ LAAS-CNRS.
%   See on top of this file for its particular copyright.

%   # END GPL LICENSE

